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  1. P

    Troubleshoot UFH PLUS radiator system

    Need a heating engineer in Central London I currently have an old worcester boiler. Since its original installation I've had many upgrades to my flat which now has 3 bathrooms and 7 zone underfloor heating plus 3 towel rail radiators. The greenstar I currently have is no longer sufficient...
  2. T

    Valiant Ecotech Plus 637 - Error F76

    A couple of weeks ago my Valiant Ecotech Plus 637 displayed Error F76. Boiler is 13 years old; serviced annually. I power cycled the boiler and it operated for ~10 days before hitting the same error again; I once again power cycled the boiler and it was in operation for ~24 hours before...
  3. C

    Worcester 35 HE plus boiler/ tr2 thermostat controller replacement

    Ive moved into a house with a worcester greenstar 35 HE plus boiler in the garage. The TR2 thermostat controller is hanging loose on the wall in the living room, and is faulty. I want the TR2 replaced with a controller i can set a timer on, either digital or mechanical, the TR2 has three wires...
    • Catherine w
    • Thread
    • boiler plus replacement thermostat worcester
    • Replies: 2
    • Forum: Boilers
  4. O

    Vaillant Ecotec 630 plus replacement

    I have a Vaillant Ecotec 630 Plus that was installed in 2007 that is connected to a 300 litre unvented tank. This provides our hot water and feeds 4 floors of underfloor heating. I am looking to replace both the boiler and tank and see they still produce this boiler. I assume the newest models...
  5. Scott_D

    Vaillant Ecotec Plus 46kw

    I have been asked to service one of these boilers 2 years old but I haven't dealt with one before. Is it just a big ecotec or different heat exchanger? Anything to look out for?
  6. N

    No hot water - Intermittent - ecoTec Plus

    Woke this morning to no hot water but heating was working fine. Checked the forums and checked all the common problems: Water and boiler pressure both ok Timer ok (hot water set to all day) No leaks and condenser pipe not frozen No error codes Tried running hot water with heating turned off...
  7. J

    Valiant Ecotec Plus 938 A - Losing pressure (losing my mind!)

    Good afternoon. I am hoping someone may be able to help with an issue I have on a Valiant Ecotec Plus 938 boiler. Fitted approx 4 years ago, the boiler has been suffering from the loss of pressure on the system (down to 0) at least once a day, typically when it is not in use. I have so far; 1...
  8. S

    Vaillant Ecotec Plus 832 Expansion Vessel

    Hi Guys, Had a quick question regarding expansion vessel on a Vaillant Ecotec Plus 832. Was servicing the boiler and upon attaching hand pump to vessle after having drained the boiler, returns and flows isolated and drain off on boiler open, the vessle showed 1 bar charge. Was wondering why...
  9. F

    12 year old Vaillant Eco Tec Plus 415 keeps turning off

    Hello, can anyone advice me on my Vaillant Ecotec plus 415. The boiler starts up but switches off after a few minutes. If the temp dial is turned up then it makes a very loud banging and flapping sound. I was advised to get system flushed by one company and another said the boiler is old i...
  10. Achille Becker

    adapters diamteter problem plus valve

    hello all i have a problem i have a valve that is 1" wide and a hose that need t connect that is 1 1/2 wide is there anywhere coud fnd an adapter ?
  11. Bogart

    Gunged up or what after some 30 plus years

    Attached are a couple of photos I ha.ve just taken after cutting out some 28mm pipe. One ,which was on the flow leg, looks way worse than the return leg one. The flow leg is now down to what a 22mm pipe might carry. Why should one leg be so much worse? Would temperature make that much...
  12. B

    Vaillant ecoTec plus 637 System boiler control options

    Vaillant ecoTec plus 637 and gledhill 250 indirect tank control options Hi, I am in the process of renovating an old farm house. I have been advised to have installed the Vaillant ecoTec plus 637 system boiler with a gledhill 250l indirect tank. I met with the heating engineers yesterday as...
    • Blondie44
    • Thread
    • boiler control ecotec plus system vaillant
    • Replies: 11
    • Forum: Boilers
  13. B

    Vaillant ecoTec plus 637 sensiocomfort control setup

    Vaillant ecoTec plus 637 and gledhill 250 indirect tank control options Hi, I am in the process of renovating an old farm house. I have been advised to have installed the Vaillant ecoTec plus 637 system boiler with a gledhill 250l indirect tank. I met with the heating engineers yesterday as...
  14. J

    F.22 Vaillant EcoTec Plus 630 - can't locate filling loop

    Hello - I have an f.22 error on this system boiler, 0.4 bars. Just moved into this house so not certain on how everything works. There are no taps under the boiler to add more water. There is a hot water cylinder in the cellar so thankfully it's just heating that we have lost. With this...
  15. F

    Combi-boiler plus Thermal heat store - problem and suitable replacement recommendation

    Hi, sorry to bother you all with this but I am really struggling to find a suitable combi-boiler replacement and a knowledgeable heating engineer to discuss options. Ive tried to note as much relevant details below - apologies if its too long or irrelevant. Any help most gratefully received...
    • fastpatjo
    • Thread
    • heat plus replacement thermal
    • Replies: 2
    • Forum: Boilers
  16. S

    Vaillant EcoTec Plus 938 temperamental in heating mode

    Hello, we have a Vaillant EcoTec Plus 938 boiler and it started behaving when running in heating mode (hot water is fine - no problems with that). The problem is that quite often when there is demand for heat (either from one of Hive TRVs or from under floor heating thermostat) boiler starts...
  17. S

    Y plan with Vaillant Ecotec plus OV430

    Can Someone tell me how to wire the Vaillant ecotec OV430 with the Y Plan system. Does the orange from terminal 8 junction box go to the RT terminal on the boiler (room thermostat)
  18. D

    Vaillant ecoTEC plus 637 with Nest or maybe SensoHome

    Hi, A newbie here but need expert advice, I have installers who have started fitting the boiler (Vaillant ecoTEC plus 637) replacing an old water tank loft system and cylinder in the cupboard I'm also installing a horizontal megaflo (tempest) Okay, so they purchased the Valliant vsmart kit...
  19. G

    Combi boiler plus shower pump

    Hi I have a 32kv combi boiler in my cellar, I am switching to a mixer shower from a cold water feed electric. Do I need to fit a booster pump in my bathroom. Or can I fit one using a combi boiler. Any help would be appreciated
    • Gazzad
    • Thread
    • boiler combi combi boiler plus pump shower
    • Replies: 6
    • Forum: Boilers
  20. V

    Ecotec plus 824..F28.

    Hi anyone. I have the F28 code on this unit. Gas IN is fine and on start up fires but within a second or two, the gas valve shuts. Taken the valve apart and the diaphram is ok,no splits. S code runs thru 1, 2 & 3 but will not progress to 4( burner ignited). Checked the low voltage solenoid and...
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